Let
be the mean of
. Then
For a random variable
following the standard normal distribution, we have
Transform the random variable to get this critical value in terms of
:
Answer:
$4
Step-by-step explanation:
Because he bought 5 smoothies and they were each $20, you have to do 20÷5. Then you get $4 as your answer.
Answer: $820
Step-by-step explanation:
Use a proportion
9.5/100 = 77.90/x
Multiply 77.90 times 100 and divide by 9.5, the answer is $820
This is the concept of probability and statistics, to get the summation of (x-μ) where μ is the mean will be given by:
(3.7-11)+(8.2-11)+(9.9-11)+(9.9-11.3)+(15.6-11)+(17.3-11)
=-7.3+-2.8+-1.1+0.3+4.6+6.3
=0
The answer is 0
